. >>> it's been a rough week for boeing's newest jet. today a 787 dreamliner flight is canceled for an error message about the plane's brakes. on monday, a japanese airline, a 787, caught fire at boston's logan airport. the fire started in the battery compartment. no one was on board. and then on tuesday, another japanese airliner 787 was canceled, this time because of a fuel leak. >> hey, that japan air may know it, but they've got fuel or something spilling out the outboard left wing there quite a bit. >> sandra endo joins us now from washington. tell us more about these incidents. they're now under investigation, right? >> well, carol, the string of irregularities for boeing's marquee plane, the 787 dreamliner, is certainly a concern for the manufacturer. the plane is the first commercial airliner to be made mostly of carbon composites, or plastic, which means it's a lighter plane that boeing says uses less fuel than conventional airliners. well, boeing says it is working with ntsb investigators, looking into monday's fire on a japan